Reference 1

Level I Good quality evidence Systematic review of RCTs with
consistent findings
High quality individual RCT
Level II Limited quality patient
orientated evidence
Systematic review of lower quality
studies or studies with inconsistent
findings
Low quality clinical trial
Cohort studies
Case-control studies
Level III Other Consensus guidelines, extrapolations
from bench research, usual practice,
opinion, disease-oriented evidence
(intermediate or physiologic outcomes
only), or case series

[1] Corticosteroids, oral/IV (anorexia/cachexia): National Department of Health: Affordable Medicines, EDP-Primary Health Care. Medicine Review: Betamethasone/dexamethasone for management of anorexia in adult palliative care patients, 29 July 2017. http://www.health.gov.za/

Corticosteroids, oral/IV (anorexia/cachexia): Miller S, McNutt L, McCann MA, McCorry N. Use of corticosteroids for anorexia in palliative medicine: a systematic review. J Palliat Med. 2014 Apr;17(4):482-5. https://www.ncbi.nlm.nih.gov/pubmed/24702642

Corticosteroids, oral/IV (anorexia/cachexia): Back I., Watson M., Lucas C., Hoy A. and Armstrong P. 2012. Anorexia, cachexia and asthenia. Palliative Care Guidelines Plus [Internet]. [Accessed 23 November 2017]. Available: http://book.pallcare.info/index.php?p=pdf&op_target=print&id=339&media=pdf&pdffmt=1&dg=1